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Analog Electronics

Analog Electronics
Which of the following is trivalent impurity ?

 Boron
 Antimony
 Silicon
None of these

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Analog Electronics
The number of orbiting electrons in germanium atom are :

 32
 36
 28
 42

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Analog Electronics
The voltage divider biasing circuit is used in amplifiers quite often because it

  limits the AC signal going to base.
  reduces the DC base electric current.
  reduces the cost of the circuit.
  makes the operating point almost independent of β.

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Analog Electronics
A D - MOSFET is considered to be a

  current controlled device.
  high - power switch.
  normally off device.
  normally on device.

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Analog Electronics
The current gain of a pnp transistor is

 the collector current divided by the emitter current.
 the negative of the npn current gain.
 near zero.
 the ratio of collector current to emitter current.

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Analog Electronics
A 555 IC is used to produce

 clock
 counter
 byte
 register

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